Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
200058goodexcellent81excellent
190057goodexcellent81excellent
180041goodexcellent61excellent
170031goodexcellent41excellent
160027goodexcellent21excellent
150027goodexcellent11excellent
140017excellentexcellent21excellent
130043goodexcellent61excellent
120059goodexcellent91excellent
110057goodexcellent101excellent
100058goodexcellent101excellent
090065lightly pollutedexcellent121excellent
0800143heavily pollutedgood221excellent
0700161heavily pollutedgood231excellent
0600125moderately pollutedgood231excellent
0500123moderately pollutedgood211excellent
0400107moderately pollutedexcellent201excellent
0300109moderately pollutedexcellent201excellent
0200104moderately pollutedexcellent201excellent
0100100lightly pollutedexcellent181excellent
000079lightly pollutedexcellent171excellent
230071lightly pollutedexcellent151excellent
220077lightly pollutedexcellent171excellent
210075lightly pollutedexcellent141excellent